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Off-Balance Sheet Financial Instruments and Guarantees (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Jun. 30, 2020
Loss Contingencies [Line Items]    
Financial instrument commitments $ 217,776 $ 143,983
Commitments to grant loans [Member]    
Loss Contingencies [Line Items]    
Financial instrument commitments 80,647 61,826
Unfunded commitments under lines of credit [Member]    
Loss Contingencies [Line Items]    
Financial instrument commitments 131,309 78,092
Standby letters of credit [Member]    
Loss Contingencies [Line Items]    
Financial instrument commitments $ 5,820 $ 4,065